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T2K · 2015

Measurement of the electron neutrino charged-current interaction rate on water with the T2K ND280 π0π^0 detector

Phys.Rev.D 91 112010 · 10.1103/PhysRevD.91.112010

arXiv:1503.08815JournalINSPIREAll papers

Measurements

CurrentFlavorTargetTopologyTypeObservablesEnergy
CCνeH2OInclusiveratiointeraction rate ratioE>1.5GeV

Abstract

This paper presents a measurement of the charged current interaction rate of the electron neutrino beam component of the beam above 1.51.5~GeV using the large fiducial mass of the T2K π0\pi^0 detector. The predominant poriton of the νe\nu_e flux (∼\sim85 %) at these energies comes from kaon decays. The measured ratio of the observed beam interaction rate to the predicted rate in the detector with water targets filled is 0.89 ±\pm 0.08 (stat.) ±\pm 0.11 (sys.), and with the water targets emptied is 0.90 ±\pm 0.09 (stat.) ±\pm 0.13 (sys.). The ratio obtained for the interactions on water only from an event subtraction method is 0.87 ±\pm 0.33 (stat.) ±\pm 0.21 (sys.). This is the first measurement of the interaction rate of electron neutrinos on water, which is particularly of interest to experiments with water Cherenkov detectors.

Citation

@article{T2K:2015ydf,
    author = "Abe, K. and others",
    collaboration = "T2K",
    title = "{Measurement of the electron neutrino charged-current interaction rate on water with the T2K ND280 $π^0$ detector}",
    eprint = "1503.08815",
    archivePrefix = "arXiv",
    primaryClass = "hep-ex",
    doi = "10.1103/PhysRevD.91.112010",
    journal = "Phys. Rev. D",
    volume = "91",
    pages = "112010",
    year = "2015"
}